aders to a high- nips it, when it is desired to screw the breech-piece en- ing elongated and expanding projectiles. Arrange- ly interesting article in this week’s number on iron tirely out of place for cleaning the parts. ments have been made for grooving a portion of our war frigates. The carriage… … ings of new inventions and discoveries, all of which are prepared ex- pressly for its columns. The SCIENTIFIC AMERICAN is devoted to the interests of Popular Science, the Mechanic Arts, Manufactures, Inventions, Agriculture, French inventors by the passing of an ordinance deal of admiration. The…
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